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UP 4014

Rasprava u 'International Heritage Railways/Tramways' pokrenuta od athelney, 23. Srpanj 2013..

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  1. Dunfanaghy Road

    Dunfanaghy Road Well-Known Member

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    Thanks Tom.
    Definitely collar work, then.
    Pat
     
    Dunfanaghy Road, 16. Listopad 2019.
    #321
  2. guycarr360

    guycarr360 Part of the furniture

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    It should be pointed out that the run took place with Roller Bearing equipped Rolling stock, and one of the big hurdles to overcome in operation was treating the rolling stock with sufficient respect until everything truly warmed up.

    Another example is here as UP844 helps rescue a stalled freight.



    When asked about "how much", they could hang off the drawbar of 4014, Ed Dickens looked over at a freight yard in Sacremento, and said, all of that!!!
     
    guycarr360, 17. Listopad 2019.
    #322
    stuarttrains se sviđa ovo.
  3. Enterprise

    Enterprise Part of the furniture

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    Altitude has very little effect on the power output of a steam locomotive except in poorly designed boilers the mass of air available for combustion could be reduced enough to limit steam production and superheat temperature.
     
    Enterprise, 17. Listopad 2019.
    #323
  4. mdewell

    mdewell Well-Known Member Friend

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    But on the other hand, reduced atmospheric pressure will mean a lower boiling point for water (93 degrees at 6,000 feet). Whether that would completely counter balance the above point I have no idea but in theory it should help.
     
    mdewell, 17. Listopad 2019.
    #324
  5. Jamessquared

    Jamessquared Nat Pres stalwart

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    No it won’t, because the boiler pressure controls the temperature of the water in the boiler.

    Tom
     
    Jamessquared, 17. Listopad 2019.
    #325
    mdewell se sviđa ovo.
  6. mdewell

    mdewell Well-Known Member Friend

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    Doh! :Facepalm:
     
    mdewell, 17. Listopad 2019.
    #326
    Jamessquared se sviđa ovo.
  7. guycarr360

    guycarr360 Part of the furniture

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    The best clip to date...
     
    guycarr360, 4. Studeni 2019.
    #327
    60525, huochemi i David likes trains se sviđa ovo.
  8. Martin Perry

    Martin Perry Nat Pres stalwart Staff Member Moderator Friend

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    Only when its in a free volume, not when its contained ... like in a boiler.
     
    Martin Perry, 4. Studeni 2019.
    #328
  9. guycarr360

    guycarr360 Part of the furniture

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    Some nice pieces on youtube have just appeared, as the recent 2 month tour came to completion.

    Now safely locked up for 2019, a year that saw the unthinkable happen, and a big boy steam again.

     
    guycarr360, 27. Studeni 2019.
    #329
    60525, Bluenosejohn, 240P15 i 1 drugoj osobi se sviđa ovo.
  10. 30854

    30854 Resident of Nat Pres

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    Just like a closed lorry carrying live chickens weighs the same even if they're all having a flutter at the same time!

    I do recall some Andean railways needing to upgrade from their first diesels, which were pretty much HP for HP equivalents of the steam locos the were intended to replace. The thin atmosphere at high altitudes has a marked negative effect on the power output of normally aspirated IC engines .... witness all piston engined aircraft have much lower 'ceilings' than jet planes (or rocket powered craft for, that matter).
     
    30854, 27. Studeni 2019.
    #330
  11. guycarr360

    guycarr360 Part of the furniture

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    BTW mileage for its first year is calculated to be just short of 11,000, for her 2 circular trips.
     
    guycarr360, 27. Studeni 2019.
    #331
  12. Martin Perry

    Martin Perry Nat Pres stalwart Staff Member Moderator Friend

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    True, but there are were very few normally aspirated IC engines designed to work at Altitiude; they were all supercharged or turbo-supercharged. The Spitfire PRXIX could evade the Messerschmitt Me262 jet at altitude by dint of its superior service ceiling (43500ft vs. 37500ft)
     
    Martin Perry, 27. Studeni 2019.
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  13. guycarr360

    guycarr360 Part of the furniture

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    And this has what to do with UP4014???
     
    guycarr360, 28. Studeni 2019.
    #333
  14. marshall5

    marshall5 Part of the furniture

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    See posts 320 - 326.
     
    marshall5, 28. Studeni 2019.
    #334
    Martin Perry se sviđa ovo.
  15. osprey

    osprey Resident of Nat Pres

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    Both have wheels....
     
    osprey, 28. Studeni 2019.
    #335
    Haighie and 240P15 like this.
  16. guycarr360

    guycarr360 Part of the furniture

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    Back on track then...

     
    guycarr360, 29. Studeni 2019.
    #336
    60525 se sviđa ovo.
  17. guycarr360

    guycarr360 Part of the furniture

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    Classic thread drift on NP....
     
    guycarr360, 29. Studeni 2019.
    #337
  18. guycarr360

    guycarr360 Part of the furniture

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    Ed Dickens has recently given a talk about the restoration of 4014

    It is over and hour long, but gives an interesting insight into the restoration and operation.

     
    guycarr360, 23. Ožujak 2020.
    #338
    240P15, osprey i Sheff se sviđa ovo.
  19. 5944

    5944 Resident of Nat Pres

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    5944, 29. Travanj 2020.
    #339
  20. guycarr360

    guycarr360 Part of the furniture

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    guycarr360, 30. Travanj 2020.
    #340
    5944 se sviđa ovo.
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